JP2792109B2 - Automatic calculation method of cut-off power for demand controller - Google Patents
Automatic calculation method of cut-off power for demand controllerInfo
- Publication number
- JP2792109B2 JP2792109B2 JP1147898A JP14789889A JP2792109B2 JP 2792109 B2 JP2792109 B2 JP 2792109B2 JP 1147898 A JP1147898 A JP 1147898A JP 14789889 A JP14789889 A JP 14789889A JP 2792109 B2 JP2792109 B2 JP 2792109B2
- Authority
- JP
- Japan
- Prior art keywords
- power
- cutoff
- control
- cut
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、デマンド契約需要家を対象とし、契約電力
の範囲内で負荷設備を有効利用するために、電力量パル
ス入力を計測することによって、現在電力，予測電力お
よび調整電力を演算し、電力超過が予測される場合には
自動的に負荷しゃ断制御を行なう、いわゆるデマンド制
御装置のしゃ断電力自動演算方式に関するものである。The present invention is directed to a demand contract customer, and measures a current energy pulse input in order to effectively use a load facility within a contract power range. The present invention relates to a so-called cut-off power automatic calculation method of a demand control device that calculates power, predicted power, and adjusted power, and automatically performs load cut-off control when power excess is predicted.
従来の技術 従来、この種のデマンド制御装置のしゃ断電力の決定
は、第２図に示すような構成であった。第２図に於いて
各制御回路毎にしゃ断電力設定部1,2……ｎのしゃ断電
力をあらかじめ負荷容量計算し、人為的に設定すること
が必要であった。2. Description of the Related Art Conventionally, the cutoff power of this type of demand control device is determined as shown in FIG. In FIG. 2, it is necessary to calculate in advance the cutoff power of the cutoff power setting units 1, 2,...
なお、11はパルス入力部、12は予測電力演算部、13は
現在電力計測部、14は調整電力演算部、15は制御出力部
である。Here, 11 is a pulse input unit, 12 is a predicted power calculation unit, 13 is a current power measurement unit, 14 is an adjusted power calculation unit, and 15 is a control output unit.
発明が解決しようとする課題 このような従来の方式では、あらかじめ各制御回路毎
に、しゃ断可能な負荷容量を計算し、かつ人為的に設定
しなければならないという煩わしさがあり、また装置内
に於いても、各制御回路毎にしゃ断電力の設定器を設け
る必要があった。その結果、操作性および装置内部回路
が複雑となる問題を有していた。さらに、しゃ断負荷容
量の設定は、制御回路に接続される負荷がしゃ断動作す
ることを前提としていることから、実際に負荷が制御回
路に接続されない場合や、しゃ断負荷容量が設定値と相
違する場合は、実際の状態と異なるという問題が有っ
た。本発明は、このような問題を解決するもので、各制
御回路毎のしゃ断電力の人為的設定を省略し、操作およ
び装置内部回路を簡単にするとともに、しゃ断負荷容量
の設定値と実際のしゃ断負荷容量の不一致という問題を
解消し、簡単かつ安価でより適正なデマンド制御装置を
提供することを目的とする。Problems to be Solved by the Invention In such a conventional method, there is a trouble that a load capacity that can be cut off must be calculated for each control circuit in advance and set artificially. In this case, it is necessary to provide a setting device for the cutoff power for each control circuit. As a result, the operability and the internal circuit of the apparatus become complicated. Furthermore, since the setting of the breaking load capacity is based on the assumption that the load connected to the control circuit performs a breaking operation, when the load is not actually connected to the control circuit or when the breaking load capacity differs from the set value. Had a problem that it was different from the actual state. The present invention solves such a problem, omitting the artificial setting of the breaking power for each control circuit, simplifying the operation and the internal circuit of the apparatus, and setting the breaking load capacity and the actual breaking power. It is an object of the present invention to solve the problem of load capacity mismatch and to provide a simple, inexpensive and more appropriate demand control device.
課題を解決するための手段 上記課題を解決するため、本発明のデマンド制御装置
のしゃ断電力自動演算方式は、あらかじめしゃ断電力初
期設定部で仮設定し、負荷しゃ断制御後は、制御前と制
御後の現在電力の変化量から自動的にしゃ断電力を演算
し、その演算結果を次回制御のしゃ断電力設定値とし
て、仮設定値を変更することを特徴とするものである。Means for Solving the Problems In order to solve the above-mentioned problems, in the demand power control device of the present invention, the power cutoff automatic calculation method is temporarily set in advance in the power cutoff initial setting unit, and after the load cutoff control, before and after the control. The present invention is characterized in that the cutoff power is automatically calculated from the current power change amount, and the calculation result is used as the cutoff power set value for the next control to change the temporary set value.
作 用 上記構成において、制御前後の負荷を実測することに
より、しゃ断電力演算部で制御回路に接続されている負
荷容量を演算し、次回制御時のしゃ断電力として扱う。Operation In the above configuration, the load capacity connected to the control circuit is calculated by the cutoff power calculation unit by actually measuring the load before and after the control, and treated as the cutoff power at the next control.
実施例 以下、本発明の実施例について第１図を参照して説明
する。Embodiment An embodiment of the present invention will be described below with reference to FIG.
第１図において、21はパルス入力部、22は予測電力演
算部、23は現在電力計測部、24は調整電力演算部、25は
しゃ断電力演算部、26はしゃ断電力初期設定部、27はし
ゃ断電力上限設定部、28はしゃ断電力下限設定部であ
る。29は制御出力部である。In FIG. 1, 21 is a pulse input unit, 22 is a predicted power calculation unit, 23 is a current power measurement unit, 24 is an adjusted power calculation unit, 25 is a cutoff power calculation unit, 26 is a cutoff power initial setting unit, and 27 is a cutoff. A power upper limit setting unit 28 is a cutoff power lower limit setting unit. 29 is a control output unit.
上記構成において、初回制御時のしゃ断電力は、しゃ
断電力初期設定部26により、目標電力設定値のＮ％（Ｎ
は０〜100の任意の正の整数）として仮設定される。２
回目以降の制御時のしゃ断電力は、しゃ断電力演算部25
で、制御前の現在電力の変化分をΔP1とし、制御後の現
在電力の変化分をΔP2とし、演算時間間隔をΔＴ（分）
とし、デマンド時限を30（分）としたときに、 として演算される。In the above configuration, the cutoff power at the time of the first control is set to N% (N
Is provisionally set as any positive integer from 0 to 100). 2
The interrupting power during the subsequent control is calculated by the interrupting power calculator 25.
The change in the current power before control is ΔP 1 , the change in the current power after control is ΔP 2 , and the calculation time interval is ΔT (minutes)
And when the demand time limit is 30 (minutes), Is calculated as
また、実際の負荷は負荷変動があり、場合によって
は、しゃ断電力演算値が０（kw）以下、すなわち、負荷
しゃ断制御しているにもかかわらず、負荷が増大すると
いう矛盾がでる場合が想定される。あるいは、しゃ断電
力を極端に小さくした場合も、制御のハンチング現象が
発生することも想定される。そこで本実施例において
は、しゃ断電力の上限値をあらかじめ設定するしゃ断電
力上限設定部27と、しゃ断電力の下限値をあらかじめ設
定するしゃ断電力下限設定部28とを設けている。In addition, the actual load has a load fluctuation, and depending on the case, the calculated value of the cutoff power may be 0 (kw) or less, that is, a contradiction that the load increases despite the load cutoff control is assumed. Is done. Alternatively, even when the cutoff power is extremely reduced, a hunting phenomenon of the control may occur. Therefore, in the present embodiment, a cutoff power upper limit setting unit 27 for setting an upper limit value of the cutoff power in advance and a cutoff power lower limit setting unit 28 for setting a lower limit value of the cutoff power in advance are provided.
しゃ断電力上限設定部27による上限値は、目標電力設
定値のＨ％（Ｈは０〜100の任意の正の整数）に、ま
た、しゃ断電力下限設定部28による下限値は、目標電力
設定値のＬ％（Ｌは０〜100の任意の正の整数）に設定
される。The upper limit value of the cutoff power upper limit setting unit 27 is H% (H is any positive integer from 0 to 100) of the target power set value, and the lower limit value of the cutoff power lower limit setting unit 28 is the target power set value. (L is an arbitrary positive integer from 0 to 100).
そして、上記しゃ断電力演算部25で演算された演算結
果は、上記しゃ断電力上限設定部27およびしゃ断電力下
限設定部28にて設定された上限値と下限値の範囲内で決
定される。The calculation result calculated by the cutoff power calculation unit 25 is determined within the range of the upper limit and the lower limit set by the cutoff power upper limit setting unit 27 and the cutoff power lower limit setting unit 28.
この演算結果は、あくまで実負荷の変動を含めた実際
の現在電力の変化量から求めたものであり、最適なしゃ
断電力を提供することができる。This calculation result is obtained from the change amount of the actual current power including the fluctuation of the actual load, and can provide the optimum cutoff power.
発明の効果 以上のように、本発明によれば、しゃ断電力を各制御
回路毎に容量計算し、あらかじめ人為的に設定しなけれ
ばならないという煩わしさは不要となり、かつ、実負荷
に於ける負荷変動による制御時のしゃ断負荷容量と設定
値の不一致という問題を解消できるという効果がある。Effect of the Invention As described above, according to the present invention, the trouble of having to calculate the breaking power for each control circuit and to set it artificially in advance is unnecessary, and the load in an actual load is eliminated. This has the effect of eliminating the problem of the mismatch between the breaking load capacity and the set value during control due to fluctuations.
第１図は本発明の一実施例を示すしゃ断電力自動演算装
置のブロック図、第２図は従来のしゃ断電力自動演算装
置のブロック図である。 21……パルス入力部、22……予測電力演算部、23……現
在電力計測部、24……調整電力演算部、25……しゃ断電
力演算部、26……しゃ断電力初期設定部、27……しゃ断
電力上限設定部、28……しゃ断電力下限設定部、29……
制御出力部。FIG. 1 is a block diagram of an automatic cut-off power calculation device showing an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional automatic cut-off power calculation device. 21 ... Pulse input unit, 22 ... Predicted power calculation unit, 23 ... Current power measurement unit, 24 ... Adjusted power calculation unit, 25 ... Blocking power calculation unit, 26 ... Blocking power initial setting unit, 27 ... … Cutoff power upper limit setting section, 28 …… cutoff power lower limit setting section, 29 ……
Control output section.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 笠井 孝二 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭55−56422（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) H02J 3/00 - 5/00────────────────────────────────────────────────── ─── Continued on the front page (72) Koji Kasai, Inventor 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Field (Int.Cl. 6 , DB name) H02J 3/00-5/00
Claims (1)
現在電力，予測電力および調整電力を演算し、自動的に
負荷をしゃ断するデマンド制御装置に於いて、しゃ断電
力を人為的に手動設定することなく、あらかじめしゃ断
電力初期設定部で仮設定し、負荷しゃ断制御後は、制御
前と制御後の現在電力の変化量から自動的にしゃ断電力
を演算し、その演算結果を次回制御のしゃ断電力設定値
として、仮設定値を変更することを特徴とするデマンド
制御装置のしゃ断電力自動演算方式。(1) By measuring an electric energy pulse input,
In a demand control device that calculates the current power, predicted power, and adjusted power and automatically shuts off the load, without manually setting the interrupting power manually, it is temporarily set in advance in the interrupting power initial setting unit, After the cutoff control, the cutoff power is automatically calculated from the change amount of the current power before and after the control, and the calculation result is used as the cutoff power set value of the next control to change the temporary setting value. Automatic calculation method of cut-off power of demand control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1147898A JP2792109B2 (en) | 1989-06-09 | 1989-06-09 | Automatic calculation method of cut-off power for demand controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1147898A JP2792109B2 (en) | 1989-06-09 | 1989-06-09 | Automatic calculation method of cut-off power for demand controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0315229A JPH0315229A (en) | 1991-01-23 |
| JP2792109B2 true JP2792109B2 (en) | 1998-08-27 |
Family
ID=15440644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1147898A Expired - Lifetime JP2792109B2 (en) | 1989-06-09 | 1989-06-09 | Automatic calculation method of cut-off power for demand controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2792109B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8311680B2 (en) | 2008-12-26 | 2012-11-13 | Industrial Technology Research Institute | Method of determining demand threshold, and method and system of demand control |
| TWI397698B (en) * | 2008-12-26 | 2013-06-01 | Ind Tech Res Inst | Method of determining demand threshold, and method and system of demand control |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5556422A (en) * | 1978-10-21 | 1980-04-25 | Tokyo Electric Power Co | Demand controller |
-
1989
- 1989-06-09 JP JP1147898A patent/JP2792109B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0315229A (en) | 1991-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5843403Y2 (en) | Electric motor overload protection device | |
| JPH02231990A (en) | Method and apparatus for control of single-phase or multi-phase ac current regulator | |
| JP2792109B2 (en) | Automatic calculation method of cut-off power for demand controller | |
| US8030870B2 (en) | Method and device for reducing the influence of a DC component in a load current of an asynchronous three-phase motor | |
| JPS6027403B2 (en) | Fault detection device for regulating control equipment | |
| US3940687A (en) | Method for controlling active power distribution in power transmission lines and a controller for effecting same | |
| US6667596B1 (en) | Method and device for controlling deceleration in an induction machine | |
| JPH09121463A (en) | Charging device | |
| JP2749776B2 (en) | Bridle roll control device and bridle roll mechanical loss measuring device | |
| JP2652445B2 (en) | Cage-type induction motor starting device | |
| JPH09503375A (en) | Efficient control system for electric motors | |
| JP2616047B2 (en) | Generator low excitation limiter | |
| JPH0549163A (en) | Dc power supply | |
| JP2621212B2 (en) | Automatic power factor adjustment device | |
| JP2592523B2 (en) | Power supply control device | |
| JPH0145272Y2 (en) | ||
| US4531086A (en) | Device for stabilizing the voltage of a single- or multi-phase a-c network | |
| JPH06105554A (en) | High voltage rectifier | |
| JP2613379B2 (en) | Current limiter for synchronous generator | |
| JPH0127653B2 (en) | ||
| JPS61226803A (en) | Process control device | |
| RU1829104C (en) | Method of limiting of overload of generator | |
| JPH05146076A (en) | Automatic switch for control accuracy | |
| JP3909260B2 (en) | Charging circuit | |
| JPH0514515B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080619 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090619 Year of fee payment: 11 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090619 Year of fee payment: 11 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |